Drug & supplement interaction

Apple Polyphenols + Cobicistat

Cobicistat brand name: Tybost.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Sep 13, 2026
The bottom line No known interaction

We found no known interaction between Apple Polyphenols and Cobicistat in our sources. Absence of a documented interaction is not the same as proven safety, and does not guarantee one does not exist. Do not start, stop, or change a medication or supplement based on this page; confirm with your pharmacist or doctor first. Additionally, although there is no interaction, the label for Cobicistat states a food rule worth keeping to, and the two are separately associated with some of the same side effects, which would make a new symptom harder to attribute to one or the other.

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Interaction report

Apple Polyphenols and Cobicistat

We checked these two against our interaction database. Here is what we found.

No Known Interaction Found

We did not find a documented interaction between Cobicistat and Apple Polyphenols in our sources. This does not guarantee that the combination is completely free of risk — there is often limited research on supplements and herbal products, especially around drug interactions.

If you decide to take both, the practical routine is simple: add one new thing at a time and note the date you started it. If the combination is going to disagree with you, it usually shows in the first days to a couple of weeks — and a start date turns “I’ve been feeling off” into something a pharmacist can actually work with. Do not stop a prescribed medicine on your own.

Always talk with your pharmacist or doctor before making changes to your medications or supplements, particularly if you take several medications or have an ongoing health condition.

Apple Polyphenols safety at a glance

Apple Polyphenols overall Use caution Likely safe in food amounts; concentrated supplements are less studied for long-term use.
Pregnancy Use caution Apples as food are fine, but concentrated extracts have not been studied in pregnancy, so avoid supplements unless your doctor approves.
Breastfeeding Use caution There is not enough information on concentrated extracts during breastfeeding, so caution is advised.

Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Cobicistat and Apple Polyphenols? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Cobicistat

Interactions in our licensed database are recorded against drug classes, not just single drug names. Cobicistat is filed under 2 classifications — cytochrome p450 3a4 (cyp3a4) inhibitors, oral drugs. Apple Polyphenols has documented interactions with 1 drug class — the most serious being insulin (moderate) — and none of Cobicistat’s classifications are among them.

Classification data comes from our licensed Natural Medicines dataset. A medication can belong to classes beyond those recorded there, so this describes how the check was run — it is not a safety guarantee.

Keep it in perspective

Apple Polyphenols Does Interact With Other Medications

Apple Polyphenols has 13 moderate known drug interactions in our database — Cobicistat isn’t one of them. If you take anything else, check it against the full list below.

Moderate 13 No known interaction 2,817 (incl. Cobicistat)
Taking anything else?

Check Another of Your Medications Against Apple Polyphenols

Covers the 2,830 medications we’ve checked against Apple Polyphenols. Pick one to open its full report.

What to actually watch for

No Interaction Found — But Data Suggests Apple Polyphenols and Cobicistat May Share Several of the Same Side Effects

This is not an interaction. Neither one changes how your body handles the other, and nothing here says they react together. What our sources do show is that each has separately been linked to the effects below — so taking both can make those effects more likely to turn up, and harder to pin on one or the other if they do.

  • Diarrhea Additional detail

    Apple Polyphenols

    “Orally, taking 600 mg apple polyphenols was reported to cause diarrhea and loose stools in one clinical study.”

    Apple Polyphenols · Natural Medicines adverse-effect record, reported in diarrhea.

    1 source cited
    1. 94863. Nagasako-Akazome Y, Kanda T, Ohtake Y, Shimasaki H, Kobayashi T. Apple polyphenols influence cholesterol metabolism in healthy subjects with relatively high body mass index. J Oleo Sci. 2007;56(8):417-28. PubMed

    Cobicistat

    Listed in the ADVERSE REACTIONS section of the FDA label for Cobicistat. Read the label on DailyMed ›

  • Headache Additional detail

    Apple Polyphenols

    “Orally, apple polyphenols seem to be well tolerated. Some clinical studies have reported no adverse effects with apple polyphenols, while mild gastrointestinal effects, nasopharyngitis, and headache have been reported in other studies.”

    Apple Polyphenols · Natural Medicines adverse-effect record, reported in cluster headache.

    4 sources cited
    1. 94855. Akazome Y, Kametani N, Kanda T, et al. Evaluation of safety of excessive intake and efficacy of long-term intake of beverages containing apple polyphenols. J Oleo Sci. 2010;59(6):321-38. PubMed
    2. 94863. Nagasako-Akazome Y, Kanda T, Ohtake Y, Shimasaki H, Kobayashi T. Apple polyphenols influence cholesterol metabolism in healthy subjects with relatively high body mass index. J Oleo Sci. 2007;56(8):417-28. PubMed
    3. 94869. Tenore GC, Caruso D, Buonomo G, et al. A Healthy Balance of Plasma Cholesterol by a Novel Annurca Apple-Based Nutraceutical Formulation: Results of a Randomized Trial. J Med Food. 2017;20(3):288-300. PubMed
    4. 102020. Saarenhovi M, Salo P, Scheinin M, et al. The effect of an apple polyphenol extract rich in epicatechin and flavan-3-ol oligomers on brachial artery flow-mediated vasodilatory function in volunteers with elevated blood pressure. Nutr. J 2017;16(1):73. PubMed

    “Orally, taking apple polyphenols may cause headache in some patients. In one clinical trial, around 26% of patients taking apple polyphenols 330 mg daily for 4 weeks reported headaches, although this adverse effect was also reported in nearly 24% of patients taking placebo.”

    Apple Polyphenols · Natural Medicines adverse-effect record, reported in cluster headache.

    1 source cited
    1. 102020. Saarenhovi M, Salo P, Scheinin M, et al. The effect of an apple polyphenol extract rich in epicatechin and flavan-3-ol oligomers on brachial artery flow-mediated vasodilatory function in volunteers with elevated blood pressure. Nutr. J 2017;16(1):73. PubMed

    Cobicistat

    Listed in the ADVERSE REACTIONS section of the FDA label for Cobicistat. Read the label on DailyMed ›

Effects for Cobicistat come from the ADVERSE REACTIONS section of its FDA label; effects for Apple Polyphenols come from the Natural Medicines adverse-effect record, quoted above. Where a percentage is shown, it is the share of 20,779 voluntary FDA FAERS reports for Cobicistat that mention that effect — a reporting proportion, not an incidence rate and not evidence the drug caused it. Wording is matched across sources by our own clinical vocabulary, so treat this as a prompt to pay attention, not a diagnosis.

How to take them

Some Cobicistat Products Have a Food Rule — Apple Polyphenols Should Not Break It

At least one FDA label for a product containing Cobicistat says to take it with food. If you take Apple Polyphenols on an empty stomach out of habit, keep them separate — and take Cobicistat with a meal where the label says to.

This may not be true of your version. Food instructions belong to the product, not the ingredient: two Cobicistat products can carry different directions, and extended-release forms often differ from immediate-release ones. The label we read is quoted below — check the directions on your own box or bottle, or ask your pharmacist, for how to take the exact product you were given.

2 DOSAGE AND ADMINISTRATION TYBOST must be coadministered with atazanavir or darunavir at the same time, with food, and in combination with other HIV-1 antiretroviral agents.

From the Dosage and Administration section of the FDA label we read for Cobicistat — where that label names a specific product, the instruction is that product's. Read the label on DailyMed ›

A food rule is not an interaction — it is about how much of the medicine you absorb. The directions that came with your own product, and your pharmacist, outrank anything on this page.

Everything else you take

See Every Supplement That Interacts With Cobicistat

This page covers Apple Polyphenols only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Cobicistat page lists 30 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Adrafinil (moderate), Cannabidiol (cbd) (moderate), Cannabinol (cbn) (moderate) and Cannabis (moderate).

By severity: 1 major · 19 moderate · 10 minor.

From our pharmacist’s overview on the Cobicistat page

“Activated charcoal is the one entry to understand first if you take cobicistat (Tybost). Charcoal soaks up drugs in the gut, and since cobicistat's entire job is boosting an HIV medicine to protective levels, blunting its absorption can put the whole regimen at risk.”

Reviewed by 2 · Jul 18, 2026

Open the Cobicistat interaction page

How much people look this up

Where Apple Polyphenols and Cobicistat Sit Against Everything Else

Out of every supplement and medication people look up on HelloPharmacist, here is where these two land this week — and which way each has been moving.

Supplement Apple Polyphenols
Top half

#586 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Cobicistat
Steady interest

#2,044 of 2,830 medications looked up here in the last 7 days

29 days ago today

Position among everything looked up on this site, not a measure of how commonly either one is used or how important it is. A supplement can climb this list because of a news story. It counts every request to the page, automated ones included, and nothing here identifies anyone.

Where does our data come from?
  • Source: the Natural Medicines (TRC Healthcare) clinical database — the evidence-graded professional reference for herb & supplement interactions.
  • Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Apple Polyphenols reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Apple Polyphenols and Cobicistat records this page draws on were last updated July 10, 2026.
  • What “no known interaction” means: no documented interaction in the sources above — not a guarantee of safety. Supplements are studied far less than prescription drugs, so we say exactly what the evidence supports, and nothing more.
Data structure & sourcing designed and verified by .
Supplement

About Apple Polyphenols

What is Apple Polyphenols?

Apple Polyphenols
  • High cholesterol
  • High blood pressure
  • Weight management
  • Antioxidant support
  • Blood sugar support
  • Skin health (topical)

Apple polyphenols are antioxidant plant compounds taken from apples and marketed for heart, weight, and blood sugar health. Early research is interesting, but there is not enough reliable human evidence to confirm these benefits. They appear generally safe in food-like amounts, but talk with your pharmacist or doctor before using concentrated supplements.

Malus domestica · Rosaceae · Fruit, peel, and pomace (sometimes unripe apples) · Capsules, tablets, powders, and standardized extracts

An interaction check asks whether these two react with each other — it does not ask whether Apple Polyphenols is a good idea for someone in your situation. Here is what our Apple Polyphenols record says about it on its own.

Apple Polyphenols: dosing

There is no standardized, well-established dose for apple polyphenols. Products vary widely in how much polyphenol they contain.The best approach is to follow the directions on the product label and not exceed the suggested amount.

From our Apple Polyphenols monograph — the full record covers uses, side effects and every documented interaction.

Read the full Apple Polyphenols monograph & all interactions
Medication

About Cobicistat

What Is Cobicistat Used For?

Brand name: Tybost

Tybost (cobicistat) is not itself an HIV treatment — it works by slowing the breakdown of certain HIV medicines so they stay active in your body long enough to work. Specifically, Tybost is used to boost the HIV medicines atazanavir or darunavir (once-daily dosing) as part of a complete HIV-1 treatment regimen in adults and in children weighing at least 14 kg (about 31 lbs).

Tybost is not interchangeable with ritonavir (another booster) for all HIV medicines. It is not recommended with darunavir twice-daily, fosamprenavir, saquinavir, or tipranavir.

Most-Reported Side Effects for Cobicistat

From FAERS, the FDA’s public side-effect reporting system (20,779 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Bone density decreased 8,112 reports
Chronic kidney disease 4,754 reports
Renal injury 4,577 reports
Tooth loss 4,186 reports
Bone loss 4,107 reports
See full Cobicistat drug information
Keep checking

Other Drugs & Apple Polyphenols

Browse every other medication we’ve checked against Apple Polyphenols — both the ones with a known interaction and the ones without. Select any drug for the full detail.

0Major
13Moderate
0Minor
2,816No known interaction
13 Moderate 2,816 No interaction
Moderate

13 interactions

No interaction 2,816 drugs checked — show the list

We also checked Apple Polyphenols against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,816 medications checked with no known interaction — see the full Apple Polyphenols list.

See the full Apple Polyphenols interactions page
See every supplement checked against Cobicistat, ranked by severity
Evidence & sources

Apple Polyphenols References

The 10 references that drive our Apple Polyphenols monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.

  1. Akazome Y, Kametani N, Kanda T, et al. Evaluation of safety of excessive intake and efficacy of long-term intake of beverages containing apple polyphenols. J Oleo Sci. 2010;59(6):321-38. PubMed
  2. Auclair S, Chironi G, Milenkovic D, et al. The regular consumption of a polyphenol-rich apple does not influence endothelial function: a randomised double-blind trial in hypercholesterolemic adults. Eur J Clin Nutr. 2010;64(10):1158-65. PubMed
  3. Deley G, Guillemet D, Allaert FA, Babault N. An Acute Dose of Specific Grape and Apple Polyphenols Improves Endurance Performance: A Randomized, Crossover, Double-Blind versus Placebo Controlled Study. Nutrients. 2017;9(8). pii: E917. PubMed
  4. Kamimura A, Takahashi T, Watanabe Y. Investigation of topical application of procyanidin B-2 from apple to identify its potential use as a hair growing agent. Phytomedicine. 2000;7(6):529-36. PubMed
  5. Kishi K, Saito M, Saito T, et al. Clinical efficacy of apple polyphenol for treating cedar pollinosis. Biosci Biotechnol Biochem. 2005;69(4):829-32. PubMed
  6. Nagasako-Akazome Y, Kanda T, Ohtake Y, Shimasaki H, Kobayashi T. Apple polyphenols influence cholesterol metabolism in healthy subjects with relatively high body mass index. J Oleo Sci. 2007;56(8):417-28. PubMed
  7. Takahashi T, Kamimura A, Kagoura M, et al. Investigation of the topical application of procyanidin oligomers from apples to identify their potential use as a hair-growing agent. J Cosmet Dermatol. 2005;4(4):245-9. PubMed
  8. Tenore GC, Caruso D, Buonomo G, et al. A Healthy Balance of Plasma Cholesterol by a Novel Annurca Apple-Based Nutraceutical Formulation: Results of a Randomized Trial. J Med Food. 2017;20(3):288-300. PubMed
  9. Saarenhovi M, Salo P, Scheinin M, et al. The effect of an apple polyphenol extract rich in epicatechin and flavan-3-ol oligomers on brachial artery flow-mediated vasodilatory function in volunteers with elevated blood pressure. Nutr. J 2017;16(1):73. PubMed
  10. Prpa EJ, Corpe CP, Atkinson B, et al. Apple polyphenol-rich drinks dose-dependently decrease early-phase postprandial glucose concentrations following a high-carbohydrate meal: a randomized controlled trial in healthy adults and in vitro studies. J Nutr B PubMed

Medication overviews come from MedlinePlus (NIH); supplement label data from the NIH Dietary Supplement Label Database. Content is written and reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

Pharmacist Counseling Corner

Taking Apple Polyphenols and Cobicistat Together: Common Questions

Is it safe to take Apple Polyphenols with Cobicistat?
We do not list a known interaction between Apple Polyphenols and Cobicistat. That does not guarantee the combination is risk-free, so confirm with your pharmacist or doctor — especially if you take other medications or have a health condition.
Do Apple Polyphenols and Cobicistat have any of the same side effects?
Yes — our sources link each of them separately to 2 of the same effects. That is not an interaction: neither changes how your body handles the other. It does mean that if one of those effects turns up, it can be harder to tell which one is behind it. They are listed on this page with the source behind each.
Should I take Apple Polyphenols and Cobicistat at the same time of day?
At least one FDA label for a product containing Cobicistat says to take it with food. If you take Apple Polyphenols on an empty stomach out of habit, keep them separate and take Cobicistat with a meal where the label says to. Food instructions belong to the product rather than the ingredient — two Cobicistat products can differ — so check the directions on your own box. This is about absorption, not an interaction.
How was the Apple Polyphenols and Cobicistat combination checked?
Interactions in our licensed database are recorded against drug classes. Cobicistat is filed under 2 classifications, and Apple Polyphenols has documented interactions with 1 drug class — none of Cobicistat's classifications are among them. A medication can belong to classes beyond those recorded in our dataset, so this describes how the check was run rather than guaranteeing safety.
Does Apple Polyphenols interact with any other medications?
Yes. Apple Polyphenols has 13 documented drug interactions in our database — Cobicistat is simply not one of them. If you take anything else, it is worth checking each one; they are all listed on this page.
Does Cobicistat interact with any supplements?
Yes. Cobicistat has documented interactions with 30 supplements in our database — Apple Polyphenols is not one of them. The Cobicistat interaction page linked on this page lists every one, ranked by severity.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Where next

Keep Exploring

Apple Polyphenols monograph Uses, safety profile, and every drug interaction in one place Cobicistat drug information The full plain-English guide to this medication Cobicistat supplement interactions Every supplement checked against Cobicistat, ranked by severity Supplement interaction checker Check any supplement or product against your medications Browse medications A–Z Every drug we’ve checked against herbs & supplements References The 10 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Cobicistat and Apple Polyphenols?

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This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.